\documentclass[multi=tikzpicture]{standalone}

\usepackage[T1]{fontenc}
\usepackage{pslatex}
\renewcommand*\ttdefault{txtt}
\usepackage{tikz-timing}
\usetikztiminglibrary[rising arrows]{clockarrows}
\usetikztiminglibrary{either}

\begin{document}

\begin{tikztimingtable}[
font=\tt,
timing/yunit=2.5ex,
timing/xunit=3ex,
timing/text format=\raisebox{.4ex}\strut\tt\Large,
timing/u/background/.style={fill=lightgray},
timing/e/background/.style={fill=lightgray}
]
{clock}     & [L] 10{C} \\
{address}   & .1U 2U 6D{address} 1.9U \\
{rd} & .1L 2L 6H 1.9L \\
{ack}   & .1U 3U 3L 2H 1.9L \\
{data}   & .1U 6U 2D{data} 1.9U \\
\extracode
\vertlines[semitransparent, dashed]{2,4,6,8}
\node[font=\sf] at (1,-9)  {\footnotesize 1};
\node[font=\sf] at (3,-9)  {\footnotesize 2};
\node[font=\sf] at (5,-9)  {\footnotesize 3};
\node[font=\sf] at (7,-9)  {\footnotesize 4};
\node[font=\sf] at (9,-9)  {\footnotesize 5};
\endextracode
\end{tikztimingtable}

\end{document}
